Guide block for glass panel



FIG. 1 is a top, right perspective view of a guide block for glass panel showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a right side elevation view thereof; and,

FIG. 6 is a front plan view thereof.

The broken lines in the figures depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a guide block for glass panel, as shown and described. 